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1990's CRS Publication Bibliography

CRS - Cosmic Ray Investigation

2000's | 1990's | 1980's | 1970's


1999

Cummings, A.C., and E.C. Stone, "Anomalous Cosmic Rays: Observations," Adv. In Space Res., Vol.23, No. 3, p. 509-520, 1999.

Cummings, A.C., and E.C. Stone, "Radial Interplanetary Mean Free Paths Inferred from Anomalous Cosmic Ray Observations in the Outer Heliosphere," Proc. 26th Intl. Cosmic Ray Conf., Salt Lake City, Vol. 7, p. 496-499, 1999.

Cummings, A.C., E.C. Stone, and C.D. Steenberg, "Composition of Anomalous Cosmic Rays and Other Ions from Voyager Observations," Proc. 26th Intl. Cosmic Ray Conf., Salt Lake City, Vol.7, p. 531-534, 1999.

Lockwood, J.A. and W.R. Webber, "Determining the Scale Size of the Heliosphere Using Global Cosmic Ray Transient Decreases," Proc. 26th Intl. Cosmic Ray Conf., Salt Lake City, Vol.6, p 544-547, 1999.

Lockwood, J.A. and W.R. Webber, "A New Look at the >70 MeV Cosmic Ray Radial Gradients in the Heliosphere Measured by the IMP, Voyager and Pioneer Spacecraft," Proc. 26th Intl. Cosmic Ray Conf., Salt Lake City, Vol. 7, p 250-253, 1999.

Lukasiak, A., F.B. McDonald, W.R. Webber, A.C. Cummings, E.C. Stone, N. Lal, "The Voyager Electron Telescope A Status Report," 26th Proc. Intl. Cosmic Ray Conf., Salt Lake City, Vol.3, p 65-68, 1999.

Lukasiak, A., F.B. McDonald, and W.R. Webber, "Voyager Measurements of the Charge and Isotopic Composition of Cosmic Ray Li, Be and B Nuclei and Implications for Their Production in the Galaxy," Proc. 26th Intl. Cosmic Ray Conf., Salt Lake City, Vol. 3, p. 41-44, 1999.

McDonald, F.B., Z. Fujii, P. Ferrando, B. Heber, A. Raviart, H. Kunow, et. Al, "Studies of the Cosmic Ray Radial and Latitudinal Intensity Gradients over the Cycle 22 Solar Minimum Period," COSPAR Proc. 1998, to appear in Adv. In Space Res., 1999.

McDonald, F.B., A.C. Cummings, B. Heikkila, N. Lal, and E.C. Stone, "The Relative Recovery of Galactic and Anomalous Cosmic Rays in the Distant Heliosphere: Evidence for Modulation in the Heliosheath," in preparation, 1999.

Steenberg, C.D., A.C. Cummings, E.C. Stone, "Drift Calculations of the Modulation of Anomalous Cosmic Rays During the 1998 Solar Minimum Period," Proc. 26th Intl. Cosmic Ray Conf., Salt Lake City, Vol.7, p. 593-596, 1999.

Stone, E.C., and A.C. Cummings, "A Tilt Model for Anomalous Cosmic Rays and the Location of the Solar Wind Termination Shock," Proc. 26th Intl. Cosmic Ray Conf., Salt Lake City, Vol. 500-503, 1999.

Stone, E.C., and A.C. Cummings, "Estimating Characteristics of the Heliosphere Using Anomalous Cosmic Ray Observations at Solar Maximum," Proc. Solar Wind 9, Amer. Inst. Of Physics (AIP), Vol. 471, p. 201-204, 1999.

Stone, E.C. , A.C. Cummings, D.C. Hamilton, M.E. Hill, S. M. Krimigis, "Voyager Observations of Anomalous and Galactic Cosmic Rays During 1998," Proc. 26th Intl. Cosmic Ray Conf., Salt Lake City, Vol.7, p. 551-554, 1999.

Webber, W.R. and J.A. Lockwood, "A New Look at the >70 MeV Cosmic Ray Radial Gradienta in the Heliosphere Measured by Spacecraft," J. Geophys. Res., Vol. 104, p. 2487, 1999.


1998

Cummings, A.C., and E.C. Stone, "Anomalous Cosmic Rays and Solar Modulation," Space Sci. Rev, Vol. 83, pp. 51-62, 1997.

Klecker, G., R.A. Mewaldt, A.C. Cummings, "Anomalous Cosmic Rays, Report of Working Group 3," Sp. Sci. Rev., Vol. 83, p. 259-308, 1998.

Marsden, R.G., A.C.Cummings, B. Klecker, L.J. Lanzerotti, J.E. Mazur, R.B. McKibben, R.A. Mewaldt, K.J. Trattner, "Anomalous Cosmic Ray Data Sets," Sp. Sci. Rev., Sub-article 2, Vol. 83, p. 263-269, 1998.

McDonald, F.B., N. Lal, and R.E. McGuire, "Cosmic Ray Recovery and Solar Minimum Phase of Solar Cycle 22: An Interim Report," J. Geophys. Res., Vol. 103, p. A1, 1998.

Soutoul, A. and W.R. Webber, "Evidence from the Voyager and ISEE-3 Spacecraft Data from the Decay of Secondary K-Capture Isotopes During the Propagation of Cosmic Rays in the Galaxy," Astron. and Astorphys., Vol. 336, p. L61, 1998.

Steenberg, C.D., H. Moraal, F.B. McDonald, "Modulation of the Anomalous and Galactic Components of Cosmic Ray H and He as described by a Full-Drift Two-Dimensional Acceleration Model," Sp. Sci. Rev., Sub-article 3, Vol. 83, p. 269-278, 1998.

Webber, W.R., "A New Estimate of the Local Interstellar Energy Density and Ionization Rate of Cosmic Rays," Astrophys. J., Vol. 506, p. 329, 1998.

Webber, W.R., J.R. Jokipii, J. Kota, J.A. Lockwood, C.d.steenberg, H. Moraal, M. Potgieter, J.A. LeRoux, F.B. McDonald, A.C. Cummings, E.C. Stone, "Anomalous Cosmic Rays and the 22 Year Solar Modulation Cycle," Sp. Sci. Rev., Vol. 83, p. 194-199, 1998.

Webber, W.R. and J.A. Lockwood, "The Inner-Heliosphere-Outer Heliosphere Comparison for Cosmic Ray Modulation," Sp. Sci. Rev., Vol. 83, p. 159-167, 1998.

Zhang, M., J.A. Simpson, H. Kunow, J.R. Jokipii, M.S. Potgieter, R.A. Burger, A.C. Cummings, "Implications of 26-Day Variations for the Global Modulation," Sp. Sci. Rev., Vol. 83, p. 203-207, 1998.


1997

Cummings, A.C., E.C. Stone, and W.R. Webber, "Intensity Gradients of Anomalous Cosmic Ray Oxygen Throughout the Heliosphere," Proc. 25th Intl. Cosmic Ray Conf., Vol. 2, p. 228-231, 1997.

Cummings, A.C., and E.C. Stone, "Rigidity Dependence of the Interplanetary Mean Free Path," Proc. 25th Intl. Cosmic Ray Conf., Vol. 2, p. 329, 1997.

Fujii, Z., and F.B. McDonald, "The Radial Intensity Gradients of Galactic Cosmic Rays (1972-1995) in the Heliosphere", J. Geophys. Res., Vol. 102, A11, p. 24201, 1997.

Haasbroek, L.J., M.S. Potgieter, and J.A. Le Roux, "Acceleration of Galactic and Jovian Electrons at the Heliospheric Solar Wind Termination Shock," Adv. Space Res., Vol.19, pp (6)953-956, 1997.

Le Roux, J.A., and H. Fichtner, "A Self-consistent determination of the Heliospheric Termination Shock Structure in the Presence of Pickup, Anomalous and Galactic Cosmic Ray Protons," J. Geophys. Res., Vol. 102, pp. 17365-17380, 1997.

Le Roux, J.A., and H. Fichtner, "The Influence of Pick-up, Anomalous and Galactic Cosmic Ray Protons on the Structure of the Heliospheric Shock - A Self-consistent Approach," Astrophys. J. Lett., Vol. 477, pp. L115-L118, 1997.

Lockwood, J.A. and Webber, W.R., "A Comparison of Cosmic Ray Intensities Near the Earth in 1976, 1987 and During 1995 and 1996," J. Geophys. Res., Vol. 102, pp. 24221-24228, 1997.

Lukasiak, A., F.B. McDonald, and W.R. Webber, "Study of Elemental and Isotopic Composition of Cosmic Ray Nuclei Ca, Ti, V, Cr, Mn and Fe," Proc. 25th Intl. Cosmic Ray Conf., Vol. 3, p. 357-360, 1997.

Lukasiak, A., F.B. McDonald, W.R. Webber and P. Ferrando, "Voyager Measurements of the Isotopic Composition of Fe, Co and Ni Nuclei--Implications for the Nucleosynthesis and Acceleration of Cosmic Rays," Adv. Space Res., Vol. 19, p. 747, 1997.

Lukasiak, A., F.B. McDonald, and W.R. Webber, "Voyager Measurements of the Isotopic Composition of Li, Be and B Nuclei," Proc. 25th Intl. Cosmic Ray Conf., Vol. 3, p. 389-392, 1997.

Lukasiak, A., F.B. McDonald, W.R. Webber, and P. Ferrando, "Voyager Measurements of the Mass Composition of Cosmic Ray Ne, Mg, Si, and S Nuclei - Implications for the Nucleosynthesis and Acceleration of Cosmic Rays," Astrophys. J., Vol. 476, p. 766, 1997

Lukasiak, A., F.B. McDonald, and W.R. Webber, "Voyager Measurements of the Mass Composition of Cosmic Ray Ca through Fe Nuclei", submitted to Astrophys. J., Vol. 488, p. 454, 1997.

McDonald, F.B., P. Ferrando, B. Heber, et. al., "A Comparative Study of Cosmic Ray Radial and Latitudinal Gradients in the Inner and Outer Heliosphere," accepted in J. Geophys. Res., Vol. 102, A3, p. 4643, 1997.

Ptuskin, V.S., S.I. Rogovaya, V.N. Zirakashvili, and J.A. Le Roux, "Dissipation of Interplanetary Turbulence by Pick-up Ions," Adv. Space Res., in press, 1997.

Stone, E.C., A.C. Cummings, "Evidence for Anomalous Cosmic Ray S, Si, and Fe in the Outer Heliosphere and for A Non-ACR Source of S at 1 AU," Proc. 25th Intl. Cosmic Ray Conf., Vol. 2, p. 289, 1997.

Stone, E.C., A.C. Cummings, "Evolution of the Energy Specta of Anomalous Cosmic Rays in the Outer Heliosphere," Proc. 25th Intl. Cosmic Ray Conf., Vol. 2, p. 253, 1997.

Webber, W.R., and J.A. Lockwood, "The Inner Heliosphere-Outer Heliosphere Comparison for Cosmic Ray Modulation," Workshop on Cosmic Ray Modulation, Space Sci. Rev., Vol. 19, pp. (6)945-948, 1997.

Webber, W.R., and J.A. Lockwood, "The Intensities of Anomalous and Galactic Cosmic Rays in the Outer Heliosphere Near the Heliospheric Equator in 1987 and During the Period from 1994-1996," J. Geophys. Res., Vol. 102, pp. 9773-9779, 1997.

Webber, W.R., A. Lukasiak, and F.B. McDonald, "Voyager Measurements of the Mass Composition of Cosmic Ray Ne, Mg, Si and S Nuclei," Astrophys. J, Vol. 476, p. 766, 1997.


1996

Cummings, A.C., and E.C. Stone, "Composition of Anomalous Cosmic Rays and Implications for the Heliosphere." Space Sci. Rev., Vol. 78, p. 117, 1996.

Fichtner, H., J.A. Le Roux, U. Mall, and D. Rucinski, "On the Transport of Pick-up Ions in the Heliosphere," Astronom. and Astrophys., Vol. 314, pp. 650-662, 1996.

Le Roux, J.A., M.S. Potgieter, and V.S. Ptuskin, "A Transport Model for the Diffusive Shock Acceleration and Modulation of Anomalous Cosmic Rays in the Heliosphere," J. Geophys. Res., Vol. 101, pp. 4791-4803, 1996.

Lockwood, J.A. and Webber, W.R., "Comparison of the Rigidity Dependence of the 11-year Cosmic Ray Variation at the Earth in Two Solar Cycles of Opposite Magnetic Polarity," J. Geophys. Res., Vol. 101, pp. 21,573-21,580, 1996.

Rucinski, D., A.C. Cummings, G. Gloeckler, A.J. Lazarus, E. Mobins, and M. Witte, "Ionization Processes in the Heliosphere - Rates and Methods of Their Determination," Space Sci. Rev., Vol. 78, p. 73, 1996.

Stone, E.C., A.C. Cummings, and W.R. Weber, "The Distance to the Solar Wind Termination Shock in 1993 and 1994 from Observations of Anomalous Cosmic Rays," J. Geophys. Res., V.101, N.A5, P. 11017, 1996.

Webber, W.R., A. Lukasiak, and F.B. McDonald, "New High-Statistical --High-Resolution Measurements of the Cosmic Ray CNO Isotopes from a 17 Year Study Using the Voyager 1 and 2 Spacecraft," Astrophys. J., Vol. 457, p. 435, 1996.


1995

Christian, E.R., A.C. Cummings, and E.C. Stone, "Observations of Anomalous Cosmic-Ray Hydrogen from the Voyager Spacecraft," Astrophys. J. Lett, Vol. 446, L105, 1995.

Cummings, A.C. and E.C. Stone, "Elemental Composition of the Anomalous Cosmic Ray Component," 24th Intl. Cosmic Ray Conf., Vol. 4, p. 497, 1995.

Cummings, A.C., J. Cummings, R.A. Mewaldt, E.C. Stone, B. Blake, M. Fraenz, D. Hovestadt, and W. Webber, "Observations of Anomalous Cosmic Rays in the Heliosphere from the SAMPEX, Ulysses, Voyager and Pioneer Spacecraft," Adv. Space Res., Vol. 16, No. 9, p. 337, 1995.

Haasbroek, L.J., M.S. Potgieter, and J.A. Le Roux, "A Computer Simulation of Large Cosmic Ray Decreases and their Effects on the Declining Modulation," Adv. Space Res., Vol. 16, No. 9, pp. 209-212, 1995.

Jokipii, J.R. and F.B. McDonald, "Quest for the Limits of the Heliosphere," Sci. Am., Vol. 472, No. 4, pp. 58-63, 1995.

Le Roux, J.A. and M.S. Potgieter, "The Simulation of Complete 11 and 22 year Modulation Cycles for Cosmic Rays in the Heliosphere using a Drift Model with Global Merged Interaction Regions," Astrophys. J., Vol. 442, pp. 847-851, 1995.

Le Roux, J.A. and V.S. Ptuskin, "Galactic Cosmic Ray Mediation of a Spherical Solar Wind Flow. I. The Steady State Cold Gas Hydrodynamical Approximation," Astrophys. J., Vol. 438, pp. 427-433, 1995.

Le Roux, J.A. and V.S. Ptuskin, "Galactic Cosmic Ray Mediation of a Spherical Solar Wind Flow. II. The Steady State Hydromagnetic Approximation," Astrophys. J., Vol. 452, pp. 423-433, 1995.

Lockwood, J.A. and W.R. Webber, "An Estimate of the Location of the Modulation Boundary for E70 MeV Galactic Cosmic Rays Using Voyager and Pioneer Spacecraft Data," Astrophys. J., Vol. 442, p. 852, 1995.

McDonald, F.B., A. Lukasiak, and W.R. Webber, "Pioneer 10 and Voyager I Observations of Anomalous Cosmic Ray Hydrogen in the Outer Heliosphere," Astrophys. J., Vol. 446, pp. L101-L104, 1995.

Seo, E.S. and F.B. McDonald, "Cosmic Ray H and He Isotopes in the Outer Heliosphere in 1994," Astrophys. J. Lett., Vol. 451, L33-L35, 1995.

Stone, E.C., A.C. Cummings, and W. Webber, "Evolution of the Energy Spectra of Anomalous Cosmic Rays in the Outer Heliosphere and the Distance to the Solar Wind Termination Shock," 24th Intl. Cosmic Ray Conf., Vol. 4, p.792, 1995.

Stone, E.C., A.C. Cummings, and W. Webber, "Radial and Latitudinal Gradients of Anomalous Cosmic Rays in the Outer Heliosphere," 24th Intl. Cosmic Ray Conf., Vol. 4, p.796, 1995.

Stone, E.C., and A.C. Cummings, "The Energy Spectra of Anomalous Cosmic Rays in the Outer Heliosphere During 1991-1994," Adv. Space Res., Vol. 16, No. 9, p. 363, 1995.

Webber, W.R. and J.A. Lockwood, "Intensity Variations of > 70 McV Cosmic Rays Measured by Pioneer 10, Voyager 1 & 2 and IMP in the Heliosphere During the Recovery Period from 1992-1995," Geophys. Res. Lett., Vol. 22, No. 19, pp. 2669-2672, October 1995.


1994

Cummings, A.C., E.C. Stone and W.R. Webber, "The Distance to the Solar Wind Termination Shock and the Source Flux of Anomalous Cosmic Rays During 1986-1988," J. Geophys. Res., 99, p. 11547, 1994.

Lukasiak, A., F.B. McDonald and W.R. Webber, "Voyager Measurements of the Isotopic Composition of Cosmic Ray Aluminum and Implications for the Propagation of Cosmic Rays," Astrophys. J. Lett., Vol. 430, p. L69, 1994.

Lukasiak, A., P. Ferrando, F.B. McDonald and W.R. Webber, "Cosmic Ray Isotopic Composition of C, N, 0, Ne, Mg, Si Nuclei in the Energy Range 50- 200 MeV/nuc Measured by the Voyager Spacecraft during the Solar Minimum Period," Astrophys. J., Vol. 426, p. 366, 1994.

Lukasiak, A., P. Ferrando, F.B. McDonald, and W.R. Webber, "The Isotopic Composition of Cosmic Ray Beryllium and Its Implication for the Cosmic Rays Age," Astrophys. J., Vol. 423, p. 426, 1994.

Lukasiak, A., P. Ferrando, F.B. McDonald and W.R. Webber, "The Isotopic Composition of Cosmic Ray Carbon, Nitrogen, Oxygen, Neon, Magnesium and Silicon Measured on the Voyager Spacecraft," Astrophys. J., Vol. 424, 1994.

McDonald, F.B., A. Barnes, L.F. Burlaga, P. Gazis, J. Mihalov and R.S. Selesnick, "The Effects of the Intense Solar Activity of March/June 1991 Observed in the Outer Heliosphere," J. Geophys. Res., Vol. 99, p. 14705, 1994.

Mewaldt, R.A., A.C. Cummings and E.C. Stone, "Anomalous Cosmic Rays: Interstellar Interlopers in the Heliosphere and Magnetosphere," EOS Transactions-AGU, Vol. 75, No. 16, p. 185, 1994.

Potgieter, M.S., and J.A. Le Roux, "The Long-Term Heliospheric Modulation of Galactic Cosmic Rays According to a Time-Dependent Drift Model with Merged Interaction Regions," Astrophys. J., Vol. 423, p. 817, 1994.

Selesnick, R.S. and E.C. Stone, "Radial Diffusion of Relativistic Electrons in Neptune's Magnetosphere," Geophys. Res. Lett., Vol. 21, p. 1579, 1994.

Seo, E.S. and V.S. Ptuskin, "Stochastic Reacceleration of Cosmic Rays in the Interstellar Medium," Astrophys. J., Vol. 431, p. 705, 1994.

Seo, E.S., F.B. McDonald, N. Lal and W.R. Webber, "A Study of Cosmic Ray H and He Isotopes at 23 AU," Astrophys. J., Vol. 432, p. 656, 1994.

Webber, W.R. and J.A. Lockwood, "Cosmic Ray Transient Decreases Observed in the Heliosphere at the Earth, Voyagers 1 and 2 and Pioneer 10 from 1987 to 1991 and their Role in the Overall Intensity Decrease that is Observed," J. Geophys. Res., Vol. 98, p. 21, 095, 1994.


1993

Cummings, A.C., E.C. Stone and W.R. Webber, "The Distance to the Solar Wind Termination Shock During 1986-1988," 23rd Intl. Cosmic Ray Conf., Vol. 3, p. 411, 1993.

Cummings, A.C., W.R. Webber and E.C. Stone, "Estimate of the Distance to the Solar Wind Termination Shock from Gradients of Anomalous Cosmic Ray Oxygen," J. Geophys. Res., Vol. 98, p. 15165, 1993.

Fujii, Z. and F.B. McDonald, "A Study of the Properties of Step Decreases and Global Merged Interaction Regions in the Long-Term Modulation of Galactic and Anomalous Cosmic Rays", 23rd Intl. Cosmic Ray Conf., Vol. 3, p. 501, 1993.

Fujii, Z. and F.B. McDonald, "Radial Gradients of the Galactic Cosmic Rays Observed from 1978 to 1992," 23rd Intl. Cosmic Ray Conf., Vol. 3, p. 477 1993.

Le Roux, J.A. and M.S. Potgieter, "An Explanation for the Large Step Decreases in Long-Term Cosmic-Ray Modulation: A Computed Simulation," 23rd Intl. Cosmic Ray Conf., Vol. 3, p. 505, 1993.

Le Roux, J.A. and M.S. Potgieter, "The Simulation of Merged Interaction Regions in the Outer Heliosphere," Adv. Space Res., Vol. 13(6), p. 251, 1993.

Le Roux, J.A. and M.S. Potgieter, "The Simulation of the 1977-1987 Cosmic-Ray Modulation Cycle using a Drift Model with Global Merged Interaction Regions," 23rd Intl. Cosmic Ray Conf., Vol. 3, p. 509, 1993.

Looper, M.D., "Energetic Protons in the Magnetosphere of Neptune," Ph.D. Thesis, 1993.

Lukasiak, P., Ferrando, F.B. McDonald and W.R. Webber, "Cosmic Ray Isotopic Composition of 6!Z!8 Nuclei in the Energy Range 50-150 MeV/n Measured by the Voyager Spacecraft during the Solar Minimum and Maximum Periods," 23rd Intl. Cosmic Ray Conf., Vol. 1, p. 539, 1993.

Lukasiak, P., Ferrando, F.B. McDonald and W.R. Webber, "The Isotopic Composition of Cosmic-ray Beryllium at 80 MeV/n, and Its Implication for the Cosmic Rays Confinement and Age," 23rd Intl. Cosmic Ray Conf., Vol. 1, p. 523, 1993.

Mauk, B., S.M. Krimigis, A.F. Cheng, and R.S. Selesnick, "Energetic Particles and Hot Plasmas of Neptune," Neptune and Triton, edited by D. Cruikshank, in press, The Univ. of Arizona Press, Tucson, AZ, 1993.

McDonald, F.B., A. Barnes, L.F. Burlaga, et. al., "The Effects of the Intense Solar Activity of March/June 1991 Observed in the Outer Heliosphere," 23rd Intl. Cosmic Ray Conf., Vol. 3, p. 351, 1993.

McDonald, F.B., N. Lal and R.E. McGuire, "Role of Drifts and Global Merged Interaction Regions in the Long-Term Modulation of Cosmic Rays," J. Geophys. Res., Vol. 98, p. 1243, 1993.

McDonald, F.B., R.E. McGuire and N. Lal, "The Recovery Phase of the Cosmic Ray Modulation Cycle: The Role of GMIRs and of Hysteresis Effects," 23rd Intl. Cosmic Ray Conf., Vol. 3, p. 521, 1993.

Potgieter, M.S., J.A. Le Roux, F.B. McDonald and L.F. Burlaga, "The Causes of the 11-year and 22-year Cycles in Cosmic-Ray Modulation," 23rd Intl. Cosmic Ray Conf., Vol. 3, p. 525, 1993.

Potgieter, M.S., J.A. Le Roux, L.F. Burlaga and F.B. McDonald, "The Role of Merged Interaction Regions and Drifts in the Heliospheric Modulation of Cosmic Rays Beyond 20 AU: A Computer Simulation," Astrophys. J., Vol. 403, p. 760, 1993.

Reinecke, J.P.L., H. Moraal, and F.B. McDonald, "The Cosmic Radiation in the Heliosphere at Successive Solar Minima: Steady-State No-Drift Solutions of the Transport Equation," J. Geophys. Res., Vol. 98, pp. 9417-9431, 1993.

Selesnick, R.S., "Micro- and Macro- Signatures of Energetic Charged Particles in Planetary Magnetospheres," Adv. Space Res., Vol. 13, No. 10, p.(10)221, 1993.

Seo, E.S., F.B. McDonald, N. Lal and W.R. Webber, "Interstellar Propagation of the Isotopes of H and He," 23rd Intl. Cosmic Ray Conf., Vol. 1, p. 511, 1993.

Seo, E.S., F.B. McDonald, N. Lal, and W.R. Webber, "Measurement of the Cosmic Ray H and He Isotopes at 23 AU," Vol. 23rd Intl. Cosmic Ray Conf., Vol. 1, p. 507, 1993.

Webber, W.R. and J.A. Lockwood, "Giant Transient Decreases of Cosmic Rays in the Outer Heliosphere in September, 1991," J. Geophys. Res., Vol. 98, pp. 7821-7825, 1993.

Webber, W.R. and J.A. Lockwood, "Large Cosmic Ray Transient decreases observed in the Heliosphere at Earth, Voyagers 1 and 2 and pioneer 10 from 1987 to 1991," J. Geophys. Res., Vol. 98, pp. 21095-21106, 1993.

Webber, W.R., J.A. Lockwood and M.A. Lee, "A Simple Response Function Simulation that Reproduces the Heliospheric 11 year Intensity - Time Variations of 70 MeV Particles Observed at IMP, Voyager 2 and Pioneer 10," 23rd Intl. Cosmic Ray Conf., Vol. 3, p. 485, 1993.


1992

Bieber, J.W., J. Chen, W.H. Matthaeus, C.W. Smith, M.A. Pomerantz, "Long-Term Variations of Interplanetary Magnetic Field Spectra with Implications for Cosmic Ray Modulation," J. Geophys. Res., in press, 1992.

Le Roux, J.A., M.S. Potgieter, "The Simulated Features of Heliospheric Cosmic-Ray Modulation with a Time-Dependent Drift Model. II. On the Energy Dependence of the Onset of new Modulation in 1987," Astrophys. J., Vol. 390, 1992.

Le Roux, J.A., M.S. Potgieter, "The Simulated Features of Heliospheric Cosmic-Ray Modulation with a Time-Dependent Drift Model. IV. The Role of Heliospheric Neutral Sheet Deformation," submitted to Astrophys. J., Vol. 390, 1992.

McDonald, F.B., N. Lal, R.E. McGuire, "The Role of Drifts and Global Merged Interaction Regions in the Long-Term Modulation of Cosmic Rays," J. Geophys. Res., in press, 1992.

McDonald. F.B., H. Moraal, J.P. L. Reinecke, et. al., "The Cosmic Radiation in the Heliosphere at Successive Solar Minima," J. Geophys. Res., Vol. 97, No. A2, pp. 1557-1570, 1992.

Potgieter, M.S., J.A. Le Roux, "The simulated Features of Heliospheric Cosmic-Ray Modulation with a Time-Dependent Drift Model. I. General Effects of the Changing Neutral Sheet Over the Period 1985-1990," Astrophys. J., Vol. 386, pp. 636-646, 1992.

Potgieter, M.S., J.A. Le Roux, "The simulated Features of Heliospheric Cosmic-Ray Modulation with a Time-Dependent Drift Model. III. General Effects of the Changing Neutral Sheet Over the Period 1985-1990," Astrophys. J., Vol. 390, 1992.

Potgieter, M.S., J.A. Le Roux, L.F. Burlaga, F.B. McDonald, "The Role of Merged Interaction Regions and Drifts in the Helios Modulation of Cosmic Rays beyond 20 AU: A Computer Simulation," Astrophys. J., submitted, 1992.

Selesnick, R.S., and E.C. Stone, "Energetic Particle Signatures of Satellites and Rings in Neptune's Magnetosphere," Adv. Space Res., Vol.12, No. 11, p. 71, 1992.

Selesnick, R.S., "Magnetic Field Models from Energetic Particle Data at Neptune," J. Geophys. Res., Vol. 97, No. A7, p. 10,863, 1992.


1991

Burlaga, L.F., F.B. McDonald, N.F. Ness, and A.J. Lazarus, "Cosmic Ray Modulation: Voyager 2 Observations, 1987-1988," J. Geophys. Res., Vol. 96, p. 3789, 1991.

Cummings, A.C., E.C. Stone, and W.R. Webber, "Isotopic Composition of Anomalous Cosmic Ray Neon," 22nd Intl. Cosmic Ray Conf., Vol. 3, p. 362, 1991.

McDonald, F.B., and R.S. Selesnick, "Solar/Interplanetary Energetic Particles in the Outer Heliosphere," 22nd Intl. Cosmic Ray Conf., Vol. 3, p. 189, 1991.

Moraal, H., J.R. Jokipii, and R.A. Mewaldt, "Heliospheric Effects on Cosmic-Ray Electrons," Astrophys. J., Vol. 367, p. 191, 1991.

Selesnick, R.S., and E.C. Stone, "Energetic Electrons at Uranus: Bimodal Diffusion in a Satellite Limited Radiation Belt," J. Geophys. Res., Vol. 96, No. A4, p. 5651, 1991.

Selesnick, R.S., and E.C. Stone, "The Electron Absorption Signature of 1989 N1," J. Geophys. Res., Vol. 96, p. 19137, 1991.

Selesnick, R.S., and E.C. Stone, "Neptune's Cosmic Ray Cutoff," Geophys. Res. Lett., Vol. 18, No. 3, p. 361, 1991.

Stone, E.C., A.C. Cummings, and W.R. Webber, "The Physical Significance of 'Shifted' Gradients and the Location of the Solar Wind Termination Shock," 22nd Intl. Cosmic Ray Conf., Vol. 3, p. 386, 1991.


1990

Christian, E.R., A.C. Cummings, and E.C. Stone, "Evidence for Anomalous Cosmic Ray Hydrogen," 21st Intl. Cosmic Ray Conf., Vol. 6, p. 186, 1990.

Cummings, A.C. and E.C. Stone, "Elemental Composition of the Very Local Interstellar Medium as Deduced from Observations of Anomalous Cosmic Rays," 21st Intl. Cosmic Ray Conf., Vol. 6, p. 202, 1990.

Cummings, A.C., E.C. Stone, and W.R. Webber, "Time Variation of Radial and Latitudinal Gradients of Anomalous Cosmic Ray Oxygen in the Outer Heliosphere," 21st Intl. Cosmic Ray Conf., Vol. 6, p. 190, 1990.

Cummings, A.C., R.A. Mewaldt, E.C. Stone, and W.R. Webber, "Radial and Latitudinal Gradients of Anomalous Cosmic Ray Oxygen and Helium from 1 to ~41 AU," 21st Intl. Cosmic Ray Conf., Vol. 6, p. 202, 1990.

Lockwood, J.A., and W.R. Webber, "Differences in the Solar Modulation of E60 MeV Cosmic Rays at Earth and 18 AU During a Complete 11-Year Cycle from 1977-1988," J. Geophys. Res., Vol. 95, p. 2427, 1990.

Moraal, H., "Cosmic Ray Perpendicular Diffusion Coefficient and Drift Velocity Calculated from Pioneer/Voyager Observations," 21st Intl. Cosmic Ray Conf., Vol. 6, p. 194, 1990.

Moraal, H., "Proton Modulation Near Solar Minimum Periods in Consecutive Solar Cycles," 21st Intl. Cosmic Ray Conf., Vol. 6, p. 140, 1990.

Selesnick, R.S., "Plasma Convection in Neptune's Magnetosphere," Geophys. Res. Lett., Vol. 17, No. 10, p. 1681, 1990.

Webber, W.R., and J.A. Lockwood, "The Onset of the New Solar Modulation Cycle in 1987-1988 as a Function of Heliocentric Radius and Latitude," J. Geophys. Res., Vol. 95, p. 2253, 1990.

Webber, W.R., M.S. Potgieter, and R.A. Burger, "A Comparison of Predictions of a Wavy Neutral Sheet Drift Model with Cosmic Ray Data Over a Whole Modulation Cycle 1976-1987," Astrophys. J., Vol. 349, p. 634, 1990.

 
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